Koch Industries is the second largest privately held company in the U.S.

Along with brother David in the late 1970s Charles Koch created groups that matched his stong libertarian ideology. Charles cofounded the Cato Institute in 1978 with Paul Crane. The brothers provided the seed money to Citizens for a Sound Economy and the Institute for Justice. Other Koch projects include the Center for the Study of Market Processes and the Institute for Humane Studies. The brothers continue to fund their projects and others that match their ideology through the David H. Koch Charitable Foundation, the Charles G. Koch Charitable Foundation, and the Claude R. Lambe CharitableFoundation.